What are the three things to remember about gravitational forces in space?

The three things to remember about gravitational forces in space are: (1) The gravitational forces are inversely proportional to the square of the distance between the objects. More is the distance between the object, less will be the gravitational force between them.

Explanation:

Its on google

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.